(19)

(11)

EP 0 591 428 A1

(12)

(43) Date of publication: 13.04.1994 Bulletin 1994/15 (21) Application number: 92914806.0 (22) Date of filing: 25.06.1992

(51) International Patent Classification (IPC):  G06F 9/ 44( . ) G06F 15/ 18( . ) G06F 11/ 25( . ) G06N 5/ 04( . ) (86) International application number: PCT/US1992/005425 (87) International publication number: WO 1993/000631 (07.01.1993 Gazette 1993/02)

(84) Designated Contracting States: DE ES FR GB GR IT NL (30) Priority: 28.06.1991 US 19910723360 (71) Applicant: UNITED TECHNOLOGIES CORPORATION Hartford, CT 06101 (US)	(72) Inventor: HAMILTON, Thomas, P. South Windsor, CT 06074 (US) (74) Representative: Klunker . Schmitt-Nilson . Hirsch  Winzererstrasse 106 D-80797 München D-80797 München (DE)